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Part 6: Common Failures and Solutions
Table 1 Failure Code Table
Failure
Code
Failure Name Reason Solution
P1
High pressure switch
failure
1. High pressure switch is
broken.
2. Refrigerant is too much.
3. There is non-condensable gas
in the refrigerant system.
1. Replace the high pressure
switch.
2. Eliminate excess refrigerant.
3. Eliminate non-condensable
gas.
P2
Protection for high
discharge
temperature
1. Refrigerant is not enough.
2. There is non-condensable gas
in the refrigerant system.
1. Increase the amount of
refrigerant.
2. Eliminate non-condensable
gas.
P3
E-Anode failure
1.Wire lose； 1.Connet the wire again；
E0
Communication data
transmission
failure
An open or short circuit
between circuit board and
display.
1. Fix the connection line.
2. Replace the connection line
or display.
E2
Ambient
Temperature
sensor failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
E3
Evaporator coil
Temperature sensor
failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
E5
Water tank
Temperature sensor
failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
E6
Discharge
Temperature sensor
failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
E7
Suction temperature
sensor failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
E8
Solar collector
temperature sensor
failure
1. The connecting wire of sensor
is open circuit or short circuit；
2.The senor is broken；
1. Repair the wire.
2. Replace the sensor.
EE
EEPROM
Parameter error
PCB initialized faulty. Replace PCB and display.
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